chore(deps): [security] bump webpack-dev-server in /website (#2479)
chore(deps): [security] bump webpack-dev-server in /website (#2479)

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 3.1.7 to 3.7.2. **This update includes a security fix.**
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Changelog](https://github.com/webpack/webpack-dev-server/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-dev-server/compare/v3.1.7...v3.7.2)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
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